| Subject | English | Danish |
| med. | Christy-Thorn function test | Christy-Thorn's funktionsprøve |
| nat.res. | common thorn-apple | pigæble (Datura stramonium L.) |
| environ., nat.res. | crown-of-thorns starfish | tornekronet søstjerne (Acanthaster planci) |
| life.sc., agric. | feathered thorn moth | løvfaldsmåler (Colotois pennaria (L.)) |
| med. | Frey thorn | Frey's nål |
| agric. | fruit of the sea buck thorn | frugt af sandtidse |
| agric. | fruit of the sea buck thorn | frugt af havtorn |
| nat.sc., agric. | kangaroo thorn | kængurutorn (Acacia armata) |
| life.sc., environ., agric. | sallow thorn | almindelig havtorn (Hippophae rhamnoides) |
| life.sc., agric., food.ind. | sallow-thorn berry | havtornfrugt |
| med. | supporting thorn | støttedorn |
| nat.res. | thorn apple | pigæble |
| bot. | thorn-apple | pigæble (Datura stramonium L.; Datura stramonium f. tatula (L.) A. Blytt; Datura tatula L. (var. tatula)) |
| med. | thorn-apple form | pigæbleform |
| med. | Thorn manoeuvre | Thorn's håndgreb |
| life.sc., fish.farm. | thorn sturgeon | glatdick (Acipenser nudiventris) |
| nat.res. | white thorn | hvidtjørn (Crataegus monogyna, Crataegus oxyacantha, Crataegus(L.)Spec.) |
| nat.sc., agric. | white thorn | almindelig hvidtjørn (Crataegus monogyna, Crataegus oxyacantha, Crataegus(L.)Spec.) |